arch(1)

NAME

arch– display the architecture of the current host

SYNOPSIS

arch [-k| archname]

DESCRIPTION

arch displays the application architecture of the current host system. Due to extensive historical use of this command without any options, all SunOS 5.x
SPARC based systems will return "sun4" as their application architecture. Use of this command is discouraged; see NOTES section below.

Systems can be broadly classified by their architectures, which define what executables will run on which machines. A distinction can be made between kernelarchitecture and applicationarchitecture (or, commonly, just “architecture”). Machines that run different kernels due to
underlying hardware differences may be able to run the same application programs.

OPTIONS

-k

Display the kernel architecture, such as sun4m,sun4c,
and so forth. This defines which specific SunOS kernel will run on the machine, and has implications only for programs that depend on the kernel explicitly (for example, ps(1)).

OPERANDS

The following operand is supported:

archname

Use archname to determine whether the application binaries
for this application architecture can run on the current host system. The archname must be a valid application architecture, such as sun4, i86pc, and so forth.

If application binaries for archname can run on the current host system, TRUE (0)
is returned; otherwise, FALSE (1) is returned.